diff --git a/include/psa/crypto_sizes.h b/include/psa/crypto_sizes.h
index 8cc965b..bb0eee5 100644
--- a/include/psa/crypto_sizes.h
+++ b/include/psa/crypto_sizes.h
@@ -49,8 +49,8 @@
  */
 #include "psa/build_info.h"
 
-#define PSA_BITS_TO_BYTES(bits) (((bits) + 7) / 8)
-#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)
+#define PSA_BITS_TO_BYTES(bits) (((bits) + 7u) / 8u)
+#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8u)
 #define PSA_MAX_OF_THREE(a, b, c) ((a) <= (b) ? (b) <= (c) ? \
                                    (c) : (b) : (a) <= (c) ? (c) : (a))
 
@@ -71,20 +71,20 @@
  */
 #define PSA_HASH_LENGTH(alg)                                        \
     (                                                               \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16 :            \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20 :      \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20 :          \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28 :    \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32 :    \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28 :       \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32 :       \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48 :       \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64 :       \
-        0)
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16u :           \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20u :     \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20u :         \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28u :   \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32u :   \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28u :      \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32u :      \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48u :      \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64u :      \
+        0u)
 
 /** The input block size of a hash algorithm, in bytes.
  *
@@ -103,19 +103,19 @@
  */
 #define PSA_HASH_BLOCK_LENGTH(alg)                                  \
     (                                                               \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 64 :            \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 64 :      \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 64 :          \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 64 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 64 :        \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 128 :       \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 128 :       \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 128 :   \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 128 :   \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 144 :      \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 136 :      \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 104 :      \
-        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 72 :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 64u :           \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 64u :     \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 64u :         \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 64u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 64u :       \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 128u :      \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 128u :      \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 128u :  \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 128u :  \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 144u :     \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 136u :     \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 104u :     \
+        PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 72u :      \
         0)
 
 /** \def PSA_HASH_MAX_SIZE
@@ -131,20 +131,20 @@
 /* Note: PSA_HASH_MAX_SIZE should be kept in sync with MBEDTLS_MD_MAX_SIZE,
  * see the note on MBEDTLS_MD_MAX_SIZE for details. */
 #if defined(PSA_WANT_ALG_SHA_512)
-#define PSA_HASH_MAX_SIZE 64
-#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
+#define PSA_HASH_MAX_SIZE 64u
+#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128u
 #elif defined(PSA_WANT_ALG_SHA_384)
-#define PSA_HASH_MAX_SIZE 48
-#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
+#define PSA_HASH_MAX_SIZE 48u
+#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128u
 #elif defined(PSA_WANT_ALG_SHA_256)
-#define PSA_HASH_MAX_SIZE 32
-#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
+#define PSA_HASH_MAX_SIZE 32u
+#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
 #elif defined(PSA_WANT_ALG_SHA_224)
-#define PSA_HASH_MAX_SIZE 28
-#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
+#define PSA_HASH_MAX_SIZE 28u
+#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
 #else /* SHA-1 or smaller */
-#define PSA_HASH_MAX_SIZE 20
-#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
+#define PSA_HASH_MAX_SIZE 20u
+#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
 #endif
 
 /** \def PSA_MAC_MAX_SIZE
@@ -185,13 +185,13 @@
 #define PSA_AEAD_TAG_LENGTH(key_type, key_bits, alg)                        \
     (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ?                            \
      PSA_ALG_AEAD_GET_TAG_LENGTH(alg) :                                     \
-     ((void) (key_bits), 0))
+     ((void) (key_bits), 0u))
 
 /** The maximum tag size for all supported AEAD algorithms, in bytes.
  *
  * See also #PSA_AEAD_TAG_LENGTH(\p key_type, \p key_bits, \p alg).
  */
-#define PSA_AEAD_TAG_MAX_SIZE       16
+#define PSA_AEAD_TAG_MAX_SIZE       16u
 
 /* The maximum size of an RSA key on this implementation, in bits.
  * This is a vendor-specific macro.
@@ -206,44 +206,44 @@
  *
  * Note that an implementation may set different size limits for different
  * operations, and does not need to accept all key sizes up to the limit. */
-#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096
+#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096u
 
 /* The maximum size of an DH key on this implementation, in bits.
  *
  * Note that an implementation may set different size limits for different
  * operations, and does not need to accept all key sizes up to the limit. */
-#define PSA_VENDOR_FFDH_MAX_KEY_BITS 8192
+#define PSA_VENDOR_FFDH_MAX_KEY_BITS 8192u
 
 /* The maximum size of an ECC key on this implementation, in bits.
  * This is a vendor-specific macro. */
 #if defined(PSA_WANT_ECC_SECP_R1_521)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 521
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 521u
 #elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_512)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 512
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 512u
 #elif defined(PSA_WANT_ECC_MONTGOMERY_448)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 448
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 448u
 #elif defined(PSA_WANT_ECC_SECP_R1_384)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384u
 #elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_384)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384u
 #elif defined(PSA_WANT_ECC_SECP_R1_256)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
 #elif defined(PSA_WANT_ECC_SECP_K1_256)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
 #elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_256)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
 #elif defined(PSA_WANT_ECC_MONTGOMERY_255)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 255
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 255u
 #elif defined(PSA_WANT_ECC_SECP_R1_224)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224u
 #elif defined(PSA_WANT_ECC_SECP_K1_224)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224u
 #elif defined(PSA_WANT_ECC_SECP_R1_192)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192u
 #elif defined(PSA_WANT_ECC_SECP_K1_192)
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192u
 #else
-#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0
+#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0u
 #endif
 
 /** This macro returns the maximum supported length of the PSK for the
@@ -261,23 +261,23 @@
  * Therefore, no implementation should define a value smaller than 64
  * for #PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE.
  */
-#define PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE 128
+#define PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE 128u
 
 /* The expected size of input passed to psa_tls12_ecjpake_to_pms_input,
  * which is expected to work with P-256 curve only. */
-#define PSA_TLS12_ECJPAKE_TO_PMS_INPUT_SIZE 65
+#define PSA_TLS12_ECJPAKE_TO_PMS_INPUT_SIZE 65u
 
 /* The size of a serialized K.X coordinate to be used in
  * psa_tls12_ecjpake_to_pms_input. This function only accepts the P-256
  * curve. */
-#define PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE 32
+#define PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE 32u
 
 /* The maximum number of iterations for PBKDF2 on this implementation, in bits.
  * This is a vendor-specific macro. This can be configured if necessary */
-#define PSA_VENDOR_PBKDF2_MAX_ITERATIONS 0xffffffff
+#define PSA_VENDOR_PBKDF2_MAX_ITERATIONS 0xffffffffU
 
 /** The maximum size of a block cipher. */
-#define PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE 16
+#define PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE 16u
 
 /** The size of the output of psa_mac_sign_finish(), in bytes.
  *
@@ -304,7 +304,7 @@
     ((alg) & PSA_ALG_MAC_TRUNCATION_MASK ? PSA_MAC_TRUNCATED_LENGTH(alg) :        \
      PSA_ALG_IS_HMAC(alg) ? PSA_HASH_LENGTH(PSA_ALG_HMAC_GET_HASH(alg)) :         \
      PSA_ALG_IS_BLOCK_CIPHER_MAC(alg) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
-     ((void) (key_type), (void) (key_bits), 0))
+     ((void) (key_type), (void) (key_bits), 0u))
 
 /** The maximum size of the output of psa_aead_encrypt(), in bytes.
  *
@@ -335,7 +335,7 @@
 #define PSA_AEAD_ENCRYPT_OUTPUT_SIZE(key_type, alg, plaintext_length) \
     (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ?                      \
      (plaintext_length) + PSA_ALG_AEAD_GET_TAG_LENGTH(alg) :          \
-     0)
+     0u)
 
 /** A sufficient output buffer size for psa_aead_encrypt(), for any of the
  *  supported key types and AEAD algorithms.
@@ -389,7 +389,7 @@
     (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 &&                      \
      (ciphertext_length) > PSA_ALG_AEAD_GET_TAG_LENGTH(alg) ?      \
      (ciphertext_length) - PSA_ALG_AEAD_GET_TAG_LENGTH(alg) :      \
-     0)
+     0u)
 
 /** A sufficient output buffer size for psa_aead_decrypt(), for any of the
  *  supported key types and AEAD algorithms.
@@ -439,12 +439,12 @@
  */
 #define PSA_AEAD_NONCE_LENGTH(key_type, alg) \
     (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) == 16 ? \
-     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CCM) ? 13 : \
-     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_GCM) ? 12 : \
-     0 : \
+     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CCM) ? 13u : \
+     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_GCM) ? 12u : \
+     0u : \
      (key_type) == PSA_KEY_TYPE_CHACHA20 && \
-     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CHACHA20_POLY1305) ? 12 : \
-     0)
+     MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CHACHA20_POLY1305) ? 12u : \
+     0u)
 
 /** The maximum default nonce size among all supported pairs of key types and
  *  AEAD algorithms, in bytes.
@@ -457,7 +457,7 @@
  *       just the largest size that may be generated by
  *       #psa_aead_generate_nonce().
  */
-#define PSA_AEAD_NONCE_MAX_SIZE 13
+#define PSA_AEAD_NONCE_MAX_SIZE 13u
 
 /** A sufficient output buffer size for psa_aead_update().
  *
@@ -494,7 +494,7 @@
      PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                                              \
      PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), (input_length)) : \
      (input_length) : \
-     0)
+     0u)
 
 /** A sufficient output buffer size for psa_aead_update(), for any of the
  *  supported key types and AEAD algorithms.
@@ -534,7 +534,7 @@
     (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 &&  \
      PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?    \
      PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
-     0)
+     0u)
 
 /** A sufficient ciphertext buffer size for psa_aead_finish(), for any of the
  *  supported key types and AEAD algorithms.
@@ -568,7 +568,7 @@
     (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 &&  \
      PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?    \
      PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
-     0)
+     0u)
 
 /** A sufficient plaintext buffer size for psa_aead_verify(), for any of the
  *  supported key types and AEAD algorithms.
@@ -579,8 +579,8 @@
 
 #define PSA_RSA_MINIMUM_PADDING_SIZE(alg)                         \
     (PSA_ALG_IS_RSA_OAEP(alg) ?                                   \
-     2 * PSA_HASH_LENGTH(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1 :    \
-     11 /*PKCS#1v1.5*/)
+     2 * PSA_HASH_LENGTH(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1u :   \
+     11u /*PKCS#1v1.5*/)
 
 /**
  * \brief ECDSA signature size for a given curve bit size
@@ -621,7 +621,7 @@
 #define PSA_SIGN_OUTPUT_SIZE(key_type, key_bits, alg)        \
     (PSA_KEY_TYPE_IS_RSA(key_type) ? ((void) alg, PSA_BITS_TO_BYTES(key_bits)) : \
      PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_ECDSA_SIGNATURE_SIZE(key_bits) : \
-     ((void) alg, 0))
+     ((void) alg, 0u))
 
 #define PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE     \
     PSA_ECDSA_SIGNATURE_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
@@ -666,7 +666,7 @@
 #define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg)     \
     (PSA_KEY_TYPE_IS_RSA(key_type) ?                                    \
      ((void) alg, PSA_BITS_TO_BYTES(key_bits)) :                         \
-     0)
+     0u)
 
 /** A sufficient output buffer size for psa_asymmetric_encrypt(), for any
  *  supported asymmetric encryption.
@@ -705,7 +705,7 @@
 #define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg)     \
     (PSA_KEY_TYPE_IS_RSA(key_type) ?                                    \
      PSA_BITS_TO_BYTES(key_bits) - PSA_RSA_MINIMUM_PADDING_SIZE(alg) :  \
-     0)
+     0u)
 
 /** A sufficient output buffer size for psa_asymmetric_decrypt(), for any
  *  supported asymmetric decryption.
@@ -728,7 +728,7 @@
  * - 0 to 1 bytes of leading 0 due to the sign bit.
  */
 #define PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(bits)      \
-    ((bits) / 8 + 5)
+    ((bits) / 8u + 5u)
 
 /* Maximum size of the export encoding of an RSA public key.
  * Assumes that the public exponent is less than 2^32.
@@ -742,7 +742,7 @@
  * - 7 bytes for the public exponent.
  */
 #define PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits)        \
-    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) + 11)
+    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) + 11u)
 
 /* Maximum size of the export encoding of an RSA key pair.
  * Assumes that the public exponent is less than 2^32 and that the size
@@ -767,7 +767,7 @@
  * - 7 bytes for the public exponent.
  */
 #define PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits)   \
-    (9 * PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE((key_bits) / 2 + 1) + 14)
+    (9u * PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE((key_bits) / 2u + 1u) + 14u)
 
 /* Maximum size of the export encoding of a DSA public key.
  *
@@ -786,7 +786,7 @@
  * - 1 + 1 + 32 bytes for 1 sub-size INTEGER (q <= 256 bits).
  */
 #define PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits)        \
-    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 59)
+    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3u + 59u)
 
 /* Maximum size of the export encoding of a DSA key pair.
  *
@@ -805,7 +805,7 @@
  * - 2 * (1 + 1 + 32) bytes for 2 sub-size INTEGERs (q, x <= 256 bits).
  */
 #define PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits)   \
-    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 75)
+    (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3u + 75u)
 
 /* Maximum size of the export encoding of an ECC public key.
  *
@@ -818,7 +818,7 @@
  * - 1 byte + 2 * point size.
  */
 #define PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits)        \
-    (2 * PSA_BITS_TO_BYTES(key_bits) + 1)
+    (2u * PSA_BITS_TO_BYTES(key_bits) + 1u)
 
 /* Maximum size of the export encoding of an ECC key pair.
  *
@@ -887,7 +887,7 @@
      (key_type) == PSA_KEY_TYPE_DSA_PUBLIC_KEY ? PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
      PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) ? PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) :      \
      PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) :  \
-     0)
+     0u)
 
 /** Sufficient output buffer size for psa_export_public_key().
  *
@@ -938,7 +938,7 @@
     (PSA_KEY_TYPE_IS_RSA(key_type) ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
      PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
      PSA_KEY_TYPE_IS_DH(key_type) ? PSA_BITS_TO_BYTES(key_bits) : \
-     0)
+     0u)
 
 /** Sufficient buffer size for exporting any asymmetric key pair.
  *
@@ -993,7 +993,7 @@
  */
 #define PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(key_type, key_bits)   \
     ((PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) || \
-      PSA_KEY_TYPE_IS_DH_KEY_PAIR(key_type)) ? PSA_BITS_TO_BYTES(key_bits) : 0)
+      PSA_KEY_TYPE_IS_DH_KEY_PAIR(key_type)) ? PSA_BITS_TO_BYTES(key_bits) : 0u)
 
 /** Maximum size of the output from psa_raw_key_agreement().
  *
@@ -1041,15 +1041,15 @@
       (alg) == PSA_ALG_CBC_NO_PADDING || \
       (alg) == PSA_ALG_CBC_PKCS7) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
      (key_type) == PSA_KEY_TYPE_CHACHA20 && \
-     (alg) == PSA_ALG_STREAM_CIPHER ? 12 : \
-     (alg) == PSA_ALG_CCM_STAR_NO_TAG ? 13 : \
-     0)
+     (alg) == PSA_ALG_STREAM_CIPHER ? 12u : \
+     (alg) == PSA_ALG_CCM_STAR_NO_TAG ? 13u : \
+     0u)
 
 /** The maximum IV size for all supported cipher algorithms, in bytes.
  *
  * See also #PSA_CIPHER_IV_LENGTH().
  */
-#define PSA_CIPHER_IV_MAX_SIZE 16
+#define PSA_CIPHER_IV_MAX_SIZE 16u
 
 /** The maximum size of the output of psa_cipher_encrypt(), in bytes.
  *
@@ -1074,15 +1074,15 @@
  *                      recognized, or the parameters are incompatible,
  *                      return 0.
  */
-#define PSA_CIPHER_ENCRYPT_OUTPUT_SIZE(key_type, alg, input_length)             \
-    (alg == PSA_ALG_CBC_PKCS7 ?                                                 \
-     (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ?                            \
-      PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type),          \
-                               (input_length) + 1) +                             \
-      PSA_CIPHER_IV_LENGTH((key_type), (alg)) : 0) :                             \
-     (PSA_ALG_IS_CIPHER(alg) ?                                                  \
-      (input_length) + PSA_CIPHER_IV_LENGTH((key_type), (alg)) :                \
-      0))
+#define PSA_CIPHER_ENCRYPT_OUTPUT_SIZE(key_type, alg, input_length)     \
+    (alg == PSA_ALG_CBC_PKCS7 ?                                         \
+     (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ?                    \
+      PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
+                               (input_length) + 1u) +                   \
+      PSA_CIPHER_IV_LENGTH((key_type), (alg)) : 0u) :                   \
+     (PSA_ALG_IS_CIPHER(alg) ?                                          \
+      (input_length) + PSA_CIPHER_IV_LENGTH((key_type), (alg)) :        \
+      0u))
 
 /** A sufficient output buffer size for psa_cipher_encrypt(), for any of the
  *  supported key types and cipher algorithms.
@@ -1095,9 +1095,9 @@
  * \param input_length  Size of the input in bytes.
  *
  */
-#define PSA_CIPHER_ENCRYPT_OUTPUT_MAX_SIZE(input_length)                        \
-    (PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE,                  \
-                              (input_length) + 1) +                             \
+#define PSA_CIPHER_ENCRYPT_OUTPUT_MAX_SIZE(input_length)                \
+    (PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE,          \
+                              (input_length) + 1u) +                    \
      PSA_CIPHER_IV_MAX_SIZE)
 
 /** The maximum size of the output of psa_cipher_decrypt(), in bytes.
@@ -1119,11 +1119,11 @@
  *                      recognized, or the parameters are incompatible,
  *                      return 0.
  */
-#define PSA_CIPHER_DECRYPT_OUTPUT_SIZE(key_type, alg, input_length)                 \
-    (PSA_ALG_IS_CIPHER(alg) &&                                                      \
+#define PSA_CIPHER_DECRYPT_OUTPUT_SIZE(key_type, alg, input_length)     \
+    (PSA_ALG_IS_CIPHER(alg) &&                                          \
      ((key_type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_CATEGORY_SYMMETRIC ? \
-     (input_length) :                                                               \
-     0)
+     (input_length) :                                                   \
+     0u)
 
 /** A sufficient output buffer size for psa_cipher_decrypt(), for any of the
  *  supported key types and cipher algorithms.
@@ -1156,16 +1156,16 @@
  *                      algorithm. If the key type or cipher algorithm is not
  *                      recognized, or the parameters are incompatible, return 0.
  */
-#define PSA_CIPHER_UPDATE_OUTPUT_SIZE(key_type, alg, input_length)              \
-    (PSA_ALG_IS_CIPHER(alg) ?                                                   \
-     (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ?                             \
-      (((alg) == PSA_ALG_CBC_PKCS7      ||                                       \
-        (alg) == PSA_ALG_CBC_NO_PADDING ||                                       \
-        (alg) == PSA_ALG_ECB_NO_PADDING) ?                                       \
-       PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type),         \
-                                input_length) :                                 \
-       (input_length)) : 0) :                                                    \
-     0)
+#define PSA_CIPHER_UPDATE_OUTPUT_SIZE(key_type, alg, input_length)      \
+    (PSA_ALG_IS_CIPHER(alg) ?                                           \
+     (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ?                    \
+      (((alg) == PSA_ALG_CBC_PKCS7      ||                              \
+        (alg) == PSA_ALG_CBC_NO_PADDING ||                              \
+        (alg) == PSA_ALG_ECB_NO_PADDING) ?                              \
+       PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
+                                input_length) :                         \
+       (input_length)) : 0u) :                                          \
+     0u)
 
 /** A sufficient output buffer size for psa_cipher_update(), for any of the
  *  supported key types and cipher algorithms.
@@ -1201,8 +1201,8 @@
     (PSA_ALG_IS_CIPHER(alg) ?                           \
      (alg == PSA_ALG_CBC_PKCS7 ?                        \
       PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) :         \
-      0) :                                              \
-     0)
+      0u) :                                             \
+     0u)
 
 /** A sufficient ciphertext buffer size for psa_cipher_finish(), for any of the
  *  supported key types and cipher algorithms.